Coupling.



C. MBNDBL.

coUPLING. y

APPLICATION FILED FEB. 6, 1911.

WM w 'TJK; #am @www UNITED STATE-s PATENT OFFICE. :"jf

canto 'Mailman' ois' "rniris'r, AUs'rmAfiiUNGARY.

' commits,

To all whom it may conoern l l Be it known that I, CARLO lVIiiNDiiL,i'a-sub?y ject of the Emperor of Austria-Hungary,-

residing at'l`.riest,5-intheEmpire ot' Austria- Huiigary,"have invented lcertain new and useful. kImprovements in Couplings, of which .theffollowing is ay specification,v reference being 'had therein to. thel accompanying draw Thisinvention rclatesto improvements in that type 'of couplings for machine parts subjected to tensile strain, which are composed of tivo helical bodies7 which" when 1assenibled together forma vcylinder and in which the coupling takes place by `screwing onepart into' the other andl by locking them ltogether after having. been screwed home.

In order that myv invention may be more fully understood I'jha've caused tobe appended hereunto one' sheet Hof` drawings like parts in the various figures. I

marked with letters lof reference indicating Figures l and 2 aresid elevations andrrossseetions in planes limmediately in frontof the -end faces of the rods of the-main parts o'f the coupling. i Figs. 3 and 4 are analogous viewsot a slightly modified form of the cou'pling. Figs. 5 and 6 are sectional kside elevations of the coupling arranged -in accordance with this invention, the main.

parts of the coupling being those shown in Figsfif`- and 4.

ln carrying out my invention and rie-ferring to the drawing, the main parts of the coupling are two helical .bodies forming together a cylinder of circular cross-section as.

` clearly'shown in Figs. l to 4. Theshape of "the `cross-section of the two helical bodiesl is whichilform a full circular superficies, as

either'a-,half of a circular superficies, two of L shown `in`Figs.`1 and 2', or the shape is that rotary and progressive movement toward yan automatic coupling is'constructed so that v the front tace'f'c 'ofeach helical member shall abut against-the rea-r face 1/ of the other helical member. vAs the disconnection Vof Speoiiicatioxi of Letters Patent. f Appiic'iitiiiiiea rabia/aiya, 1911.-'seriaiiio. eos-,905.

' 3 Fig. 7 lis a cross section onliiieE-F Fig. 6.

them to enga Patented May 21, y1912.

the twohalves or members always involves a helical. movement of one member relatively to the other, the interlocking of the twov members after having been screwed 'home may be effected by causing the action 'of either of the kinds of movements to cease,vt

namely, either the rotary lor the longitudinal movement. Bytensile strain, a rotary movement is obviously created vin each half of the coupling.

As thev moments of rotation created in both members of the coupling are of the same intensity and of opposite direct-ion, it is possible to cause'them to cou-nterbalance each other by means ofone half of a ratchet as t allow the coupling members to turn in the direction. in'which they screw into each other as well asv to turn freely in both directions when being disengage Figs. 5 to 7 show such a coupling for tensile strain, in which the helical coupling mein# bers, after being screwedtogether, are held in rigid coupling position by spring pressed sleeves c. coupling are of the shape shown in FigsB f and l, but the diametricallympposite menitherebyr providing 'a' perfectly automatic coupling.-

The members m and n of thed vdevice attached to each member of the cou- 'plijng working'together in such a manner bers of the pairs of sectors m and n, on one, l

or both parts of the coupling are not integrally connected together at their centra-l.

portion.- `Each of these members is revolulv inserted into a socket k provided with a collar k and carries a sleeve a adapted to slide to-and fr o 'a given way along'a key g `and having a collaro.v Between the col- 'couplingmemben The outer ends of both sleeves a, a facingv each other are provided witli'corresponding ratchetjteeth in such positions'4 that when coming y.in contact with each other in consequence of the screwing together of the two members m, n of the cover each other, while coupling, theyrs yturning in ftli p'osite direction causes onsequently," the `cou 1 ed structure is closed by pling of the d' ward each'oth of 'the sleevesu s drawn rearward.

In cases Whenzthemembers. p, gjiI- Wla n, ofiy l advisable tomakeytheir ends taper insuch a manner that the members enter each other the coupling are fili-ot.properly guided, fit .is

`lars 0 and le there is a helical spring t pressi ing the sleeve a toward the inner end of the 95.

10.5 simply moving members. fm. andv ntohile'foriuncoupliligeither even-when the direction of movement of the same does not quite coincide with their Vgeo- 'metrical axes. With such a structure, the

^ axes 'of the members are linearly adjusted come into contact they rotate against each other, and on the application of the tensile strain, would at once become disengaged from each other, but on account of the pressure of the springs t t, the ratchets on the engaging faces of the sleeves a, catch upon each other and lock the spiral -members to get-her. By drawing back one of said sleeves, they are released from engagement, and the uncoupling of the parts follows.

Having thus fully described my inventiony l. In a couplin the combination with the parts'to be coup ed, of two similar helical coupllng members, each having its outer end journaled to one of the parts to be coupled, asleeve keyed on each of said coupling members, resilient means adapted to force the sleeves inward and mutually engaging ratchet teeth upon the inner ends of said sleeves, said ratchet teeth being adapted for engagement only when the coupling members are turned in the' direction for uncoupling the same, as herein set forth.

2. In a coupling the combination with the parts to be coupled of two like-shaped helical coupling members, each having its outer end ournaled to one of the parts to be coupled, a sleeve upon each of said coupling members adapted to slide along but not to turn around the same, springs adapted to urge the sleeves inward, and mutually engaging ratchet teeth upon the inner ends of the sleeves, the saidl ratchet teeth being adapted for engagement only when the coupling members are turned in the direction for uncoupling thesame, substantially as and for the purpose described.

In testimony whereof I hereunto ax my signature in presence of two witnesses.

CARLO MENDEL.

Witnesses:

ENRICO MAIONICA, AUGUSTO STUFFLER. 

